Being a spa's central nervous system is no easy task, they're exposed to all kinds of harsh conditions, so a circuit board's normal life expectancy is usually between eight and ten years—yikes! Don't fret, with proper care and attention your circuit board could last as long as twenty years.
How do I know if my hot tub circuit board is bad?
If you DO have 220 volts across both hot wires coming from the house, then next measure the voltage across both heating element pins. You should see 220 volts. If you do not, then the circuit board is faulty and will need to be replaced or sent to us for repair.